package com.itheima.web.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

@WebServlet(name = "BaseServlet", value = "/BaseServlet")
public class BaseServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //super.service(req, resp);
        //获取请求路径
        String uri = req.getRequestURI();

        //获取最后一段路径 方法名
        int index = uri.lastIndexOf('/');
        String methodName = uri.substring(index + 1);

        //执行方法
        //获取字节码对象
        Class<? extends BaseServlet> aClass = this.getClass();
        try {
            Method method = aClass.getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
            //执行方法
            method.invoke(this,req,resp);
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        //执行方法
    }
}
